package com.example.myblog.controller.admin;

import com.example.myblog.NotFoundException;
import com.example.myblog.entity.Type;
import com.example.myblog.service.TypeService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.web.PageableDefault;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.validation.Valid;


/**
 * Created by asus on 2020/5/28 21:40
 */
@Controller
@RequestMapping("/admin")
public class TypeController {

    @Autowired private TypeService typeService;

    //查找所有并分页
    @GetMapping("/types")
    public String types(@PageableDefault(size = 8,sort = {"id"},direction = Sort.Direction.DESC)
                                    Pageable pageable, Model model){

        model.addAttribute("page",typeService.listType(pageable));

        return "admin/types";
    }

    //跳转到新增分类页,带上new的type
    @GetMapping("/types/input")
    public String input(Model model){
        model.addAttribute("type",new Type());
        return "admin/types-input";
    }

    //新增分类方法
    @PostMapping("/types")
    public String addType(@Valid Type type, BindingResult result,RedirectAttributes attributes){
        Type type1 = typeService.getTypeName(type.getName());
        // BindingResult rejectValue绑定验证
        if(type1 != null){
            result.rejectValue("name","nameError","不能添加重复的分类");
        }
        if(result.hasErrors()){
            return "admin/types-input";
        }
        //消息提示
        Type t = typeService.saveType(type);
        if(t == null){
            attributes.addFlashAttribute("message","新增失败");
        }else {
            attributes.addFlashAttribute("message","新增成功");
        }
        return "redirect:/admin/types";
    }

    //跳转到编辑,带上对应的type
    @GetMapping("/types/{id}/input")
    public String editInput(@PathVariable Long id, Model model){
        model.addAttribute("type",typeService.getType(id));
        return "admin/types-input";
    }

    //更新分类方法
    @PostMapping("/types/{id}")
    public String updateType(@Valid Type type, BindingResult result,@PathVariable Long id,RedirectAttributes attributes){
        Type type1 = typeService.getTypeName(type.getName());
        if(type1 != null){
            // BindingResult rejectValue绑定验证
            result.rejectValue("name","nameError","更新内容重复");
        }
        if(result.hasErrors()){
            return "admin/types-input";
        }
        Type t = typeService.updateType(id,type);
        if(t == null){
            attributes.addFlashAttribute("message","更新失败");
        }else {
            attributes.addFlashAttribute("message","更新成功");
        }
        return "redirect:/admin/types";
    }

    //删除分类方法
    @GetMapping("/types/{id}/delete")
    public String delete(@PathVariable Long id,RedirectAttributes attributes){
        typeService.deleteType(id);
        attributes.addFlashAttribute("message","删除成功");
        return "redirect:/admin/types";
    }

}
